Wheat-heater.



UNITED STATES: PATENT caries. i

WISCONSIN, ASSIGNOB OF O NE-IHALE TO JOHN GEORGE HAGMANN, 01 LA CBOSSE,

GEORGE M. HEATH, OF

LA onossn, WISCONSIN.

WHEAT-HEATER Specification of Letters Patent.

Application filed September 13, 1909. Serial No. 517,485.

To all whom it may concern:

Be it known that I,J0HN Gnonen Hac- MANN, a citizen of'the United States, residing at La Crosse, in the county of La Crosse and State of W1sconsin, have invented certain new and usetul Improvements in Wheat-Heaters, of which the following is a.

wheat-heating portion 0 the apparatus of a' plurality of contiguous independent elements or sections of zigzag shape, the heating fluid flowing through a longitudinal passage-way within the body of the section while the am gravitates through openings provided lntermediate contiguous pairs of the sections.

And I- increase the efiiciency of the apparatus by so tapering the elements that the fluid passa e ways are gradually narrowed from the in at to the outlet portions, while the rain assage-ways are gradually widened rom t e inlet to the outlet ortions.

My improvements are i1 ustrated in the accompanying drawingsyin which- Figure 1 is an elevation of a grain heater embodying my improvements, a portion of the casing bemg broken away to show the heaterdevices. of the apparatus on the plane .of the brokenline 'ww of Fig. 1, a portion of the heater elements being shown in elevation and a ortion in vertical section. 3 is an. en-

a an lower .portions of a pair ofthe heater elements, and Figs. 4 and 5 are respectively transverse sections .on the lines 13-01 and I z-z of Fig. 3, illustrating the re1ative contraction of the fluid passage-ways and w den-.

ing of the grain'pass e-way's toward the discharge end. And-F? s. 6, 7, and 8- are enlarged detail .views of t e devices for regulating the discharge of the heated grain from Fig. 2 is avertical section.

nged vertical sectional view of the upper in this structure the heating devices are arthe top for introducin the grain to the heatmg dpassage-ways an a hopper 6 beneath the ev1ces is provided for receivin and conductm away the heated grain ischarged from t e apparatus.

The heater proper is composed of a plurality of hollow independent sections or elements, designated a, b, a, and d, placed in v uxta osition for compactness of structure and. or provlding suitable intermediate assage-ways forthe descent of the grain. he sections are of like construction and size and sists ofa relatively widev and long but shallow metal body 7 preferably cast, providing 1 a tight chamber 8 for the passage of a heat- 111g fluid, preferably steam, and the walls are body is rovided at both si with longitudinal ri s 10,and both body and ribs are zigrowed from the to to the bottom, while the height of'the ribs 0 measured from the body of the sections are placed sldefb sid a series ofintermediate zigz channels-11 t hat the intake to the discharge ends.

Steam is introduced to opposite sides of the chambers 8 of the sections 7 by means of; pipes 12 and short branch st supply near the top of pipes 13 arran matus; and 1s water of eondensatlon, through short outlet recharge pipes 15 arranged at'the foot of the apparatus.

The wheat,

braced at intervals by bridge-studs 9. The.-

inside, from .the to to the bottom, while. that pps ischarged, togetherwith the rections Patented Jan. 4, 1910;

ranged and a feed;hopper' 5 is provided at hence are interchangeable. Each section conzag ed.at corresponding agglles throughout of the 1 se ction 7 increases correspondingly from top to bot-, tom. This construction produces, when two widen gradually between t 0 sections l4 hich are connected. to the main] against the walls of the heater sections in f p alternation, whereby all parts of the masses 'in their travel may be brought in direct contact with the heating surfaces.

. For regulating the discharge of grain from the passage-ways -11 gates 16 are provided'and are connected to the lower ends of the sections 7 by hinges 17. The lower or :free edges of the hinged gates for each passage-way 11 rest on the inclined sides of a V-shaped fork 18 which is held in vertical position onthe horizontal portion 19 of a rod 20 the body of which is upright and has grain from escaping at the ends of the gates plate's2tv are secured to the posts 1 at both i ends of the gates. .These devices enable the flow of. the grain to be so regulated as to subi'ect it to the action of the heating devices for onger or shorter periods as may be desired, and to stop the discharge when necessary.

The series of heater elements or sections a, 6, 0, etc., may be so assembled that each element is capable of removal edgewise fromthe group, for it is not necessary that the edges of the ribs 10 be in actual contact with one another to prevent grain from flowing from one passage-way into another. And the end casing and steam connection can be readllyremoved to permit the desired section to be withdrawn from the group and housing.

As suggestive of a desirable construction I would say that I have for some time had in successful operation apparatus in which the heating sections or elements are about six feet high, about twofeet wide, the ribs laced apart about two and one-half inches rom center'to center, and the distance be-- tween their. outer surfaces about. two and one-fourth inches. The walls of the section bodies are of uniform thickness of about 'five-sixths of an inch throughout their length but converge sufiiciently to produce a steam-chamber the'depth of which is about one and three-sixteenths inches-at the top and about three-fourths of an inch at the bottonn The ribs widen correspondingl from aboutseven thirty-seconds of an inc high at the top to about sevenv-sixteenths of an l-IlCh at the bottom. The zi zag courses of the sections are at angles 0 about fiftydegrees to a horizontal plane. But I do i not wish to limit myself to these or other exact sizes or proportions, as they may be varied considerable in the production of a ribs and contiguous sections providing a series of intermediate grain passage-Ways,

' substantially as set forthl 2. In a grain heater, a series of vertically arranged zigzag heating sections provided with longitudinal ribs, the bodies of the sections providing steam passage-ways that narrow from top to bottom and the ribs and contiguous sections providing a series of intermediate grain passage-ways that widen from top to bottom, substantially as set forth.

3. In a grain heater, a series of vertically arranged zigzag heating sections provided with longitudinal ribs, the bodies of the sections providing steam passage-ways and the ribs and contiguous sections providing a series of intermediate grain passage-ways, means for introducin steam to the upper portions and discharging it from the lower portions of the steam spaces, means for introducing grain at the top of the intermediate passage-ways, and means for regulat ing its discharge from the lower ends thereof, substantially as set forth.

4. In a grain heater, a series of vertically arranged zigzag heating sections provided with longitudinal ribs, the bodies of the sections providing steam passage-ways that narrow from top to bottom and the ribs and contiguous sect1ons providing a series of intermediate grain passage-ways that widen from top to bottom, means for introducing steain to the upper portions and discharging it from the lower portions of the steam spaces, means for introducing grain at the top of the intermediatepassage-ways, and means for regulatin its discharge from the lower ends thereo substantially 'as set forth.

5. In a grain heater, a series of vertically arranged zigzag heating sections provided with longitudinal ribs, the bodies of the sections providing steam passage-ways and the ribs and contlguous sections providing a series of intermediate grain passage-ways, means for introducin steam to the upper portions and discharging it from the lower portions of the steam spaces, means for introducing grain at the top of the intermediate passage-ways, gates, arranged at the lower ends of the passage-ways, and means for moving the gates to .control the dis- EhaIige of the grain, substantially as set ort (3. An element or section for a grain heater consisting of a tapering hollow metal body of zigzag shape provided on both sides with a series of longitudinal ribs the outer faces of which are equidistant throughout their length, substantially as set forth.

7. An element or section for a grain heater consisting of a tapering hollow metal body the walls of which are of substantially uniform thickness and of zigzag shape and provided on both sides with a Series of longitudinal ribs the outer faces of which are equidistant throughout their length, substantially as set forth.

8. An element or section for a grain heater consisting of a zigzagged hollow metal 'body relatively long and wide and shallow and having its walls of substantially uniform thickness and provided on both sides with a series of longitudinal ribs the outer faces of 20 which are equidistant throughout their length, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses this 2nd day-of 25 September, 1909.

J 0H3 GEORGE HAGMANN.

Witnesses A. J. PITKIN, C. J. MARBOR. 

